PARIS , France (AFP) — France’s Prime Minister Manuel Valls said Thursday “no theory can be ruled out” in the missing EgyptAir flight which disappeared en route to Cairo from Paris. “No theory can be ruled out on the cause of this disappearance,” said Valls, speaking after the plane vanished from radar over the Mediterranean with 66 people on board. French President Francois Hollande and his Egyptian counterpart Abdel Fattah al-Sisi have “agreed to cooperate […]